+Actually I want to repartition my harddisk in order to install other OSes besides DragonFly, so for that I need to shrink the current installation size. Above all, I would like my system just like it is now.

+

+Although several methods could be used, as this is a HAMMER installation, I'm going to use HAMMERS's mirror-{read,write} capabilities.

+This assumes you cannot store the PFSs in another HAMMER disk so that you have to store physical data compressed in files that can be put in any share you have.

+Here I will be using a NFS share.

+

+# Pre-steps

+## HAMMER version

+You should check that your HAMMER version is at least 2 (NORM 2.3 - New directory entry layout).

+If not, you would have to use hammer version-upgrade. See [hammer(8)](http://leaf.dragonflybsd.org/cgi/web-man?command=hammer&section=8) for details.

+

+## LiveCD

+You will need a DragonFlyBSD LiveCD in order to perform steps for the new installation. Release 2.4.0 or later is recommended.

+Download the ISOs from [here](http://www.dragonflybsd.org/mirrors/).

+

+## /boot partition

+

+Note that if your /boot is out of the ROOT HAMMER filesystem, you should copy the data also, so you can restore your current kernel in the new installation. Having kernel and world out of sync can be a problem sometimes. You have been warned.

+

+# Data backup

+At this point you should have a place ready to store all the compressed files you are going to generate.